Speedometer gears
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Joined: Jan 2010
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From: Los Angeles
Car: 1991 RS/B4C clone
Engine: 355 TPI
Transmission: Probuilt Street/Strip 700r4
Axle/Gears: 7.625 axle with 3.23 gears/TrueTrac
Speedometer gears
I know there is a sticky, but I still can't find the EXACT info I need. I'm moving up from a 2.73 to a 3.23 on Tuesday, and I really need to find the part numbers for either 15 tooth drive gear and 38 tooth driven gear or 17 tooth drive gear and 42 tooth driven gear. I called PATC and he didn't have either in stock so I'm at a loss now. Any help will be appreciated!
Joined: Apr 2005
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Speedometer gears
Original GM part #'s
17 tooth drive gear (red) GM# 8640517
15 tooth drive gear (grey) GM# 8642620
38 tooth driven gear (blue) GM# 25513045
42 tooth driven gear. (green) GM# 25513049
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UltRoadWarrior9
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Sep 2, 2015 08:24 PM
